Average-rate optimal PSAM transmissions over time-selective fading channels

Shuichi Ohno, Georgios B. Giannakis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations

Abstract

Enabling linear minimum-mean square error (LMMSE) based estimation of random time-selective channels, pilot symbol assisted modulation (PSAM) has well documented merits as a fading countermeasure capable of improving bit error rate performance. In this paper, we establish average-rate optimality of PSAM by showing that the insertion of equi-powered and equi-spaced pilot symbols in PSAM transmissions maximizes a tight lower bound of the average channel capacity. Relying on a simple closed form expression of this bound in terms of the LMMSE channel estimator variance, we further design PSAM transmissions with optimal spacing of pilot symbols, and optimal allocation of the transmit-power budget between pilot and information symbols.

Original languageEnglish (US)
Title of host publicationIEEE Wireless Communications and Networking Conference, WCNC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages374-378
Number of pages5
ISBN (Electronic)0780373766
DOIs
StatePublished - 2002
Event2002 IEEE Wireless Communications and Networking Conference, WCNC 2002 - Orlando, United States
Duration: Mar 17 2002Mar 21 2002

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
Volume1
ISSN (Print)1525-3511

Other

Other2002 IEEE Wireless Communications and Networking Conference, WCNC 2002
CountryUnited States
CityOrlando
Period3/17/023/21/02

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